Add "unsafe" AsyncRequestBody constructors for byte[] and ByteBuffers (#3925)

Author: StephenFlavin

.changes/next-release/feature-AWSSDKforJavav2-5d806ad.json

@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "AWS SDK for Java v2",
+    "contributor": "StephenFlavin",
+    "description": "Add \"unsafe\" and \"fromRemaining\" AsyncRequestBody constructors for byte arrays and ByteBuffers"
+}

core/sdk-core/src/main/java/software/amazon/awssdk/core/internal/async/ByteBuffersAsyncRequestBody.java

@@ -25,6 +25,7 @@
 import software.amazon.awssdk.annotations.SdkInternalApi;
 import software.amazon.awssdk.core.async.AsyncRequestBody;
 import software.amazon.awssdk.core.internal.util.Mimetype;
+import software.amazon.awssdk.utils.BinaryUtils;
 import software.amazon.awssdk.utils.Logger;
 
 /**

core/sdk-core/src/test/java/software/amazon/awssdk/core/async/AsyncRequestBodyTest.java

@@ -17,6 +17,8 @@
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import com.google.common.jimfs.Configuration;
 import com.google.common.jimfs.Jimfs;